Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC-related driver updates from Olof Johansson:
 "Various driver updates for platforms and a couple of the small driver
  subsystems we merge through our tree:

  Among the larger pieces:

   - Power management improvements for TI am335x and am437x (RTC
     suspend/wake)

   - Misc new additions for Amlogic (socinfo updates)

   - ZynqMP FPGA manager

   - Nvidia improvements for reset/powergate handling

   - PMIC wrapper for Mediatek MT8516

   - Misc fixes/improvements for ARM SCMI, TEE, NXP i.MX SCU drivers"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (57 commits)
  soc: aspeed: fix Kconfig
  soc: add aspeed folder and misc drivers
  spi: zynqmp: Fix build break
  soc: imx: Add generic i.MX8 SoC driver
  MAINTAINERS: Update email for Qualcomm SoC maintainer
  memory: tegra: Fix a typos for "fdcdwr2" mc client
  Revert "ARM: tegra: Restore memory arbitration on resume from LP1 on Tegra30+"
  memory: tegra: Replace readl-writel with mc_readl-mc_writel
  memory: tegra: Fix integer overflow on tick value calculation
  memory: tegra: Fix missed registers values latching
  ARM: tegra: cpuidle: Handle tick broadcasting within cpuidle core on Tegra20/30
  optee: allow to work without static shared memory
  soc/tegra: pmc: Move powergate initialisation to probe
  soc/tegra: pmc: Remove reset sysfs entries on error
  soc/tegra: pmc: Fix reset sources and levels
  soc: amlogic: meson-gx-pwrc-vpu: Add support for G12A
  soc: amlogic: meson-gx-pwrc-vpu: Fix power on/off register bitmask
  fpga manager: Adding FPGA Manager support for Xilinx zynqmp
  dt-bindings: fpga: Add bindings for ZynqMP fpga driver
  firmware: xilinx: Add fpga API's
  ...

1 files changed, 115 insertions, 0 deletions

diff --git a/drivers/soc/imx/soc-imx8.c b/drivers/soc/imx/soc-imx8.c
new file mode 100644
index 000000000000..fc6429f9170a
--- /dev/null
+++ b/drivers/soc/imx/soc-imx8.c
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2019 NXP.
+ */
+
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <linux/sys_soc.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+
+#define REV_B1				0x21
+
+#define IMX8MQ_SW_INFO_B1		0x40
+#define IMX8MQ_SW_MAGIC_B1		0xff0055aa
+
+struct imx8_soc_data {
+	char *name;
+	u32 (*soc_revision)(void);
+};
+
+static u32 __init imx8mq_soc_revision(void)
+{
+	struct device_node *np;
+	void __iomem *ocotp_base;
+	u32 magic;
+	u32 rev = 0;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx8mq-ocotp");
+	if (!np)
+		goto out;
+
+	ocotp_base = of_iomap(np, 0);
+	WARN_ON(!ocotp_base);
+
+	magic = readl_relaxed(ocotp_base + IMX8MQ_SW_INFO_B1);
+	if (magic == IMX8MQ_SW_MAGIC_B1)
+		rev = REV_B1;
+
+	iounmap(ocotp_base);
+
+out:
+	of_node_put(np);
+	return rev;
+}
+
+static const struct imx8_soc_data imx8mq_soc_data = {
+	.name = "i.MX8MQ",
+	.soc_revision = imx8mq_soc_revision,
+};
+
+static const struct of_device_id imx8_soc_match[] = {
+	{ .compatible = "fsl,imx8mq", .data = &imx8mq_soc_data, },
+	{ }
+};
+
+#define imx8_revision(soc_rev) \
+	soc_rev ? \
+	kasprintf(GFP_KERNEL, "%d.%d", (soc_rev >> 4) & 0xf,  soc_rev & 0xf) : \
+	"unknown"
+
+static int __init imx8_soc_init(void)
+{
+	struct soc_device_attribute *soc_dev_attr;
+	struct soc_device *soc_dev;
+	struct device_node *root;
+	const struct of_device_id *id;
+	u32 soc_rev = 0;
+	const struct imx8_soc_data *data;
+	int ret;
+
+	soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
+	if (!soc_dev_attr)
+		return -ENODEV;
+
+	soc_dev_attr->family = "Freescale i.MX";
+
+	root = of_find_node_by_path("/");
+	ret = of_property_read_string(root, "model", &soc_dev_attr->machine);
+	if (ret)
+		goto free_soc;
+
+	id = of_match_node(imx8_soc_match, root);
+	if (!id)
+		goto free_soc;
+
+	of_node_put(root);
+
+	data = id->data;
+	if (data) {
+		soc_dev_attr->soc_id = data->name;
+		if (data->soc_revision)
+			soc_rev = data->soc_revision();
+	}
+
+	soc_dev_attr->revision = imx8_revision(soc_rev);
+	if (!soc_dev_attr->revision)
+		goto free_soc;
+
+	soc_dev = soc_device_register(soc_dev_attr);
+	if (IS_ERR(soc_dev))
+		goto free_rev;
+
+	return 0;
+
+free_rev:
+	kfree(soc_dev_attr->revision);
+free_soc:
+	kfree(soc_dev_attr);
+	of_node_put(root);
+	return -ENODEV;
+}
+device_initcall(imx8_soc_init);